Sweet Corn, Foliar Sprays to Control Worms on Silking Corn, 1979

The sweet corn utilized in this study was located on the Robert Wiggins Farm, Stratham, NH. Before the block was selected, it had been treated with one application of Lannate at 0.9 lb ai/acre while in the whorl stage to clean up an infestation of fall armyworm. Each plot consisted of a 30-ft row with each treatment replicated 4 times in a randomized complete block design. Spray treatments were applied to the silk area beginning at 10% silk stage and extending into the brown silk stage. Frequency of applications was determined utilizing black light trap collections of corn earworm moths and following the spray intervals recommendations of the local sweet corn pest management program. Spray applications were made using a one gallon B & G COo pressurized sprayer of 52 gallons per acre. Evaluations were made on Sep 13 by examining 25 ears from each replicate for the presence of worms and/or feeding injury.